Welding apparatus



(No Model.) 3 Sheets-Sheet 1.

J., A. PROSS 8v 0. E. LIP E. WELDING APPARATUS.

No. 495,947. Patented Apr. 18, 1893.

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J. A. PROSS s; c. E. LIPE.

WELDING APPARATUS.

Patented Apr. 18, 1893.

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J. A. PROSS 8a 0. E. LIPE.

WELDING APPARATUS.

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UNITED STATES PATENT OFFICE. 4

JOHN A. PROSS AND CHARLES E. LIFE, OF SYRACUSE, NE\V YORK.

WELDING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 495,947, dated April18, 1893.

Application filed April 1, 1892. Serial No. 427,335. (No model.)

To all whom it may concern.-

Be it known that we, JOHN A. PRoss and CHARLES E. LIPE, of Syracuse, inthe county of Onondaga, in the State of New York, have invented new anduseful Improvements in Welding Apparatus, of which the following, takenin connection with the accompanying drawings, is a full, clear, andexact description.

Our invention relates to apparatus for welding bars of metal, and whichis adapted to heat and weld, in a single furnace, metals which fuseat,diiferent temperatures, as well as those which fuse at equaltemperatures.

Our object is to produce a novel welding apparatus for butt welding,either of metals fusing at the same or different temperatures, theheating being done in a single furnace, and in which the furnace isconstructed in segments adapted to be swung laterally, to open or closethe furnace, and in which the bars to be welded are held in verticallyadj ustable and vertically movable clamps or grips, which are alsoadapted tobe swung laterally to adjust the bars within the furnace; inwhich the furnace is provided with a swinging cover and is alsocontracted at the bottom.

Our invention consists in the several novel features of construction andoperation hereinafter described and which are specifically set forth inthe claims hereunto annexed.

It is constructed as follows, reference being had to the accompanyingdrawings,in which Figure 1, is a front elevation of the apparatus,closed. Fig. 2, is aside elevation of the same. Fig. 3, is a top plan ofthe furnace closed.Fig. 4, is a like view of the same, opened. Fig. 5,is an elevation of the inner face of one of the furnace sections. Fig.6,is a sectional elevation of two bars prepared for welding. Fig. 7, isa sectional elevation of two bars welded. Fig. 8, is atop plan of one ofthe grip jaws, and its pivotal mounting in one of the vertical slides,which is shown in transverse section. zontal section of the standard andtop plan of the table. Fig. 10, is a detail of one of the set screws ina clamp and the rod extension.

A, is the standard erected upon a suitable bed, and provided with atable a, mounted upon flanges upon the'sides thereof, its armsstraddling the standard and pro- Fig. 9, is a horivided with slots aandadjustably held in position by a cross bar -,asecured transverse to thestandard, or by any equivalent attachment, and also adapted to receiveand carry the transverse pipe b, which is closed at one end, and at theother is connected to an. air pipe b' leading to a source of air supplyand -b is a gas pipe connected to a source of supply, and also connectedto the air pipe as shown. Both of these pipes are provided with suitableshutoff valves or cocks, as shown.

B-, is the furnace shown as constructed in two segments, each providedwith a rearward and perforated lug, through which a pivot bolt or pin cis inserted into the table; and each segment is also provided with aforward and perforated arm d-,one of which is provided with a swinginglever d' adapted to detachably engage with the perforation in the otherarm. The table a is also provided with a central opening, concentricwith the bore of the furnace,.and with a slot opening out therefromradially through which the bars are inserted and removed.

The furnace is provided in its vertical walls with a series of radialopenings, shown in dotted lines, in each of which a nipple e is mounted,to which one end of the flexible hose -e is connected, the other beingconnected to the pipe b.

For the purpose of concentrating and retaining the heat in the furnace,we provide it with a sectional cover h, the opening through which is alittle larger than the upper bar k-, shown in Fig. 5, in dotted lines,which is inserted through it into the furnace, one end of each coversection being pivoted upon the furnace segment, and the other end isprovided with a handle h by which either one, or both of the coversections, can be opened to permit of visual inspection of the bars inthe furnace. A vertically movable slide D is connected by a tongue andgroove joint to the front of the standard, below the table, and it isvertically adjustable by means of the hand screw m inserted through thearm -m' upon the standard and the lug --mupon the slide. A bolt n-,inserted into the standard through a slot (not shown) in the slide,operates both as an auxiliary guide and also to secure the slide in theposition desired by i the tightening up of the nut. Upon the front ofthe slide we mount the vertically adjustable foot p-, by a tongue andgroove joint and a tightening bolt, which operates to support the bottomof the lower bar; and adjacent to the top we mount in like manner one ormore jaws --p'- although the upper one may be stationary.

Above the furnace we mount a vertically movable work-holder r, by meansof the connecting link -1" and the weighted counterbalance lever -r",and -s-s-- are one or more vertically adjustable jaws connected theretoby a tongue and groove joint. This construction is somewhat similar tothe sliding work-holder shown in the Letters Patent granted to us April29, 1892, No. 473,884, for improved process of and apparatus for weldingmetals, but has been found in practice to obviate the serious trouble ofthe rusting and sticking together of the sliding parts.

The heat from the furnace destroys the 1u-' brication at this point, andthe gases or products of combustion attack and oxidize the surfaces tosuch an extent as to seriously in- 1 terfere with the free working ofthe parts.

' bar and grip it against one or more of said jaws, and hold itconcentric with the furnace, when the screws are operated. The functionof this loose bolt is to remove the point of the set screw from theheated bar, so that the threaded portion may not be heated while understrain, which would soon compress and alter the pitch of the thread, andthus prevent its free action in the nut. Alever wpivoted upon thework-holder and slotted as shown at the bearing upon the standard, isthe means by which the heated ends of the bars are forced together inthe furnace to make the weld.

The bars k and --k'- are usually made respectively more or less convexand concave upon the ends to be welded, the flux being placed in theconcavity.

The standard A is composed of two parts having a Hat joint at -u the twoparts being held together by the bolt which passes through an enlargedopening in the base of the upper section. It will be observed that thelower section supports the lower bar, while the upper section supportsthe upper bar. The object of this joint is to provide means forlaterally adjusting the alignment of the two bars after they areseverally clamped in the holders. This adjustment sometimes becomesnecessary if the bars are unequal in diany further displacement.

ameter. It also allows of the eccentric welding of the bars whendesired. Similarly, the table supporting the furnace is ad j ustablysecured on flanges a projecting from the standard, for the purpose ofcentering the furnace about bars of different sizes.

The operation is as follows: The largest bar, or the bar which fuses atthe highest temperature, is usually placed below with its upper endsomewhat above the point of entrance of the gases, which is the hottestpart of the furnace. The upper bar is now secured in such position thatthe lever is convenient to the operator when the bars are in contact.The counter-weight is now adjusted so that the preponderance of weightis slightly in favor of the bar, so that there will be a slight pressureon the joint. The furnace is then closed, the gas lighted, and the airblast adj usted to the required pressure. The heating of the bars nowprogresses rapidly, the operator watching the process carefully, whichmay be done by occasionally moving the cover plate. When nearing thepoint of fusing great care and skill are required to bring both bars tothe proper welding heat at the same instant. If the upper bards heatingtoo fast the adjustment must be operated to raise the joint farther fromthe direct flame, or vice versa, as the conditions vary. When fusion isabout to take place, the operator, who has now hold of the lever, willfeel the gradual breaking down of the metal, which is immediatelyfollowed by the fusing and upsetting of the metal at the joint. At thisinstant, sudden pressure is brought to bearon the lever to insure asolid weld and the gas shut-01f when the blast of air which continueschills the heated metals and checks The operation is now completed andthe furnace may be opened and the bar taken out through the gap as soonas sufficiently cooled.

It will be readily seen that by the use of the rod extensions, o-- ofthe set screws -osuch rods can be readily changed when damaged fromtheir exposure to the intense heat, especially above the furnace.

What we claim as our invention, and desire to secure by Letters Patent,is-

1. The combination with the standard and the horizontal table thereon,ofa furnace consisting of segments independently pivoted to and restingupon the table, and each provided with a forward arm, and means to lockthe arms together when the segments are closed.

2. The combination with the standard and the table thereon, of a furnaceconsisting of segments pivotally mounted upon the table, and a coverperforated centrally and pivoted upon the furnace.

3. The combination with the standard, the table thereon and the furnaceconsisting of segments independently pivoted upon the table, of avertically movable work-holder above the furnace, and a verticallymovable slide below the furnace, clamp s upon said holder and slide andmeans to operate them Vertically.

4. The combination with the standard, the

said work-holder and slide and provided with jaws, and means to hold thebars therein.

5. The combination with the standard and the furnace supported thereby,of vertically adj ustable j aws' and laterally swinging clampsindependently connected to the standard in sets, one above and the otherbelow the furnace, said clamps being provided with means to grip the barin the jaws.

6. The combination with the standard, the table thereon, and the furnaceconsisting of segments independently pivoted upon the table, of avertically movable work-holder above the furnace, a vertically movableslide below the furnace, and means to operate them independently and amain pipe leading to sources of air and gas supply supported by saidstandard, and flexible branch pipes leading therefrom and connected tothe furnace segments.

7. i The combination with the standard, the table thereon, and a furnacecomposed of segments independently pivoted upon said table, of a mainpipe leading to sources of air and gas supply, and flexible pipesleading therefrom and connected to said furnace segments.

8. The combination with the standard, the table thereon, and a furnacecomposed of segments pivotally mounted upon said table, of a main pipeleading to sources of air and gas supply, flexible pipes connecting saidfurnace segments to said main pipe, and a cover pivotally mounted uponsaid furnace and provided with a central opening of less diameter thanthat of the furnace.

9. The combination with the standard, the table thereon, the furnacecomposed of seg ments pivoted thereon, the main pipe leading to a sourceof air and gas supply, and flexible pipes leading therefrom to saidfurnace, of vertically adjustable slides mounted upon the standard,vertically adjustable jaws mounted upon the slides, and swinging clampspivoted upon the slides.

10. The combination with the furnace and the standard, of the slideconnected to the standard'below the furnace and adjustable Vertically,the holder connected to the stand ard above the furnace by links, thecounterbalance connected to said holder, the lever pivoted to thestandard and connected to the holder, and the grip jaws upon said holderand slide.

11. The combination with the furnace and the standard, of the slideconnected to the standard below the furnace and adjustable vertically,the holder connected to the standard above the furnace by links, thecounterbalance connected to said holder, the lever pivoted on saidstandard, and connected to the holder, the grip jaws upon said holderand slide, and the swinging clamps pivoted upon said holder and slide.

12. The combination with the standard and the table of a furnacecomposed of segments independently pivoted on the table andpipingleading therefrom to sources of air and gas.

13. The combination with a furnace com-' posed of segments independentlypivoted upon the supporting table and means to support it, of swinginggrip clamps above and below it, and normally in line with the centerthereof and jaws movably secured to the furnace support.

14. In a welding machine, the combination of a standard in two sections,a furnace carried by the standard independent work-holding devices foreach section, and means for adjustment between the two sections withreference to the alignment of the bars to be welded.

15. In a welding machine, a standard supporting a laterally-adj ustablefurnace support a furnace supported thereby and a vertically adjustablework-holder in combination with a superimposed standard, provided with avertically movable Work-holder and means for lateral adjustment betweenboth sections of said standard.

In witness whereof we have hereunto set too our hands this 25th day ofMarch, 1892.

JOHN A. PROSS. CHARLES E. LIPE. In presence of-- H. P. DENISON, G. W.SMITH.

